public void ParseValidEquationString_ReturnsCoefficients() { var equation = "4x^2-12x+4=0"; var aCoefficient = 4; var bCoefficient = -12; var cCoefficient = 4; var actualCoefficients = EquationSolver.GetCoefficients(equation); Assert.AreEqual(aCoefficient, actualCoefficients[0]); Assert.AreEqual(bCoefficient, actualCoefficients[1]); Assert.AreEqual(cCoefficient, actualCoefficients[2]); }